I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets.... & v% Q& y% \7 h7 c% J8 [( D' J( }- @, v/ D
For me, I think car-pool is just to share part of gas "cost" and have some fun on road..... 3 P( a2 t3 V& _! d& M - B0 k5 _# @5 L8 yI usally charge passager 30 bucks for a trip.